Configuration Items - Freescale Semiconductor DSP56800E User Manual

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Table 5-404. decoder_sEncSignals Data Structure Members (Continued)

Configuration Items

This section summarizes the symbols used in macro definitions for the static Quadrature Decoder

module configuration by the driver initialization routine. These symbols are intended for the

application (project) specific configuration file appconfig.h. See e.g. Example 5-400 for more

Table 5-405. Quadrature Decoder Configuration Items for appconfig.h

DEC_x_DECCR_INIT

DEC_x_WTR_INIT

DEC_x_FIR_INIT

DEC_x_UIR_INIT

DEC_x_LIR_INIT

Note - x specifies the used Quadrature Decoder module. It can be either 0 or 1.

API Specification

This section specifies the exact usage for each API function.

Function arguments for each routine are described as in, out, or inout.

1. in argument means that the parameter value is an input only to the function.

2. out argument means that the parameter value is an output only from the function.

3. inout argument means that a parameter value is an input to the function, but the same

parameter is also an output from the function.

Note: inout parameters are typically input pointer variables in which the caller passes the address

of a pre-allocated data structure to a function. The function stores its results within that data

structure. The actual value of the inout pointer parameter is not changed.

A bit reflecting the state of the Encoder PhaseA

UWord16 : 13

Targeting 56F8xxx Platform